From 2c3c1048746a4622d8c89a29670120dc8fab93c4 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 20:49:45 +0200 Subject: Adding upstream version 6.1.76. Signed-off-by: Daniel Baumann --- include/linux/spi/max7301.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 include/linux/spi/max7301.h (limited to 'include/linux/spi/max7301.h') diff --git a/include/linux/spi/max7301.h b/include/linux/spi/max7301.h new file mode 100644 index 000000000..e392c5375 --- /dev/null +++ b/include/linux/spi/max7301.h @@ -0,0 +1,36 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef LINUX_SPI_MAX7301_H +#define LINUX_SPI_MAX7301_H + +#include + +/* + * Some registers must be read back to modify. + * To save time we cache them here in memory + */ +struct max7301 { + struct mutex lock; + u8 port_config[8]; /* field 0 is unused */ + u32 out_level; /* cached output levels */ + u32 input_pullup_active; + struct gpio_chip chip; + struct device *dev; + int (*write)(struct device *dev, unsigned int reg, unsigned int val); + int (*read)(struct device *dev, unsigned int reg); +}; + +struct max7301_platform_data { + /* number assigned to the first GPIO */ + unsigned base; + /* + * bitmask controlling the pullup configuration, + * + * _note_ the 4 lowest bits are unused, because the first 4 + * ports of the controller are not used, too. + */ + u32 input_pullup_active; +}; + +extern void __max730x_remove(struct device *dev); +extern int __max730x_probe(struct max7301 *ts); +#endif -- cgit v1.2.3